<template>
  <div :style="{ height: height, width: width }" />
</template>

<script>
import * as echarts from 'echarts';
import './map/china.js'

export default {
    props: {
		height:{
			type:String,
			default:'70px'
		},
		width:{
			type:String,
			default:'100%'
		},
	},
    data() {
		return {
			chart:{}
		};
	},
	watch:{
		data(){
			this.init()
		}
	},
    mounted() {
        setTimeout(() => {
			this.init()
		}, 20)
	},
    methods:{
        init(){
            this.chart = echarts.init(this.$el);

              var geoCoordMap = {
                台湾: [121.5135, 25.0308],
                黑龙江: [127.9688, 45.368],
                内蒙古: [110.3467, 41.4899],
                吉林: [125.8154, 44.2584],
                北京市: [116.4551, 40.2539],
                辽宁: [123.1238, 42.1216],
                河北: [114.4995, 38.1006],
                天津: [117.4219, 39.4189],
                山西: [112.3352, 37.9413],
                陕西: [109.1162, 34.2004],
                甘肃: [103.5901, 36.3043],
                宁夏: [106.3586, 38.1775],
                青海: [101.4038, 36.8207],
                新疆: [87.9236, 43.5883],
                西藏: [91.11, 29.97],
                四川: [103.9526, 30.7617],
                重庆: [108.384366, 30.439702],
                山东: [117.1582, 36.8701],
                河南: [113.4668, 34.6234],
                江苏: [118.8062, 31.9208],
                安徽: [117.29, 32.0581],
                湖北: [114.3896, 30.6628],
                浙江: [119.5313, 29.8773],
                福建: [119.4543, 25.9222],
                江西: [116.0046, 28.6633],
                湖南: [113.0823, 28.2568],
                贵州: [106.6992, 26.7682],
                云南: [102.9199, 25.4663],
                广东: [113.12244, 23.009505],
                广西: [108.479, 23.1152],
                海南: [110.3893, 19.8516],
                上海: [121.4648, 31.2891],
            };

              var data = [
                { name: "北京", value: 199 },
                { name: "天津", value: 42 },
                { name: "河北", value: 102 },
                { name: "山西", value: 81 },
                { name: "内蒙古", value: 47 },
                { name: "辽宁", value: 67 },
                { name: "吉林", value: 82 },
                { name: "黑龙江", value: 123 },
                { name: "上海", value: 24 },
                { name: "江苏", value: 92 },
                { name: "浙江", value: 114 },
                { name: "安徽", value: 109 },
                { name: "福建", value: 116 },
                { name: "江西", value: 91 },
                { name: "山东", value: 119 },
                { name: "河南", value: 137 },
                { name: "湖北", value: 116 },
                { name: "湖南", value: 114 },
                { name: "重庆", value: 91 },
                { name: "四川", value: 125 },
                { name: "贵州", value: 62 },
                { name: "云南", value: 83 },
                { name: "西藏", value: 9 },
                { name: "陕西", value: 80 },
                { name: "甘肃", value: 56 },
                { name: "青海", value: 10 },
                { name: "宁夏", value: 18 },
                { name: "新疆", value: 180 },
                { name: "广东", value: 123 },
                { name: "广西", value: 59 },
                { name: "海南", value: 14 },
            ];

            var convertData = function (data) {
                var res = [];
                for (var i = 0; i < data.length; i++) {
                var geoCoord = geoCoordMap[data[i].name];
                if (geoCoord) {
                    res.push({
                    name: data[i].name,
                    value: geoCoord.concat(data[i].value),
                    });
                }
                }
                return res;
            };

            let option = {
                tooltip: {
                    trigger: "item",
                    formatter: function (params) {
                        if (typeof params.value[2] == "undefined") {
                        return params.name + " : " + params.value;
                        } else {
                        return params.name + " : " + params.value[2];
                        }
                    },
                },
                legend: {
                    orient: "vertical",
                    y: "bottom",
                    x: "right",
                    data: ["pm2.5"],
                    textStyle: {
                        color: "#fff",
                    },
                },
                visualMap: {
                    show: false,
                    min: 0,
                    max: 500,
                    left: "left",
                    top: "bottom",
                    text: ["高", "低"], // 文本，默认为数值文本
                    calculable: true,
                    seriesIndex: [1],
                    inRange: {},
                },
                geo: {
                    map: "china",
                    show: true,
                    roam: true,
                    zoom: 1.2,
                    label: {
                        normal: {
                        show: false,
                        },
                        emphasis: {
                        show: false,
                        },
                    },
                    itemStyle: {
                        normal: {
                        areaColor: "#3a7fd5",
                        borderColor: "#0a53e9", //线
                        shadowColor: "#092f8f", //外发光
                        shadowBlur: 20,
                        },
                        emphasis: {
                        areaColor: "#0a2dae", //悬浮区背景
                        },
                    },
                },
                series: [
                    {
                        symbolSize: 5,
                        label: {
                        normal: {
                            formatter: "{b}",
                            position: "right",
                            show: true,
                        },
                        emphasis: {
                            show: true,
                        },
                        },
                        itemStyle: {
                        normal: {
                            color: "#fff",
                        },
                        },
                        name: "light",
                        type: "scatter",
                        coordinateSystem: "geo",
                        data: convertData(data),
                    },
                    {
                        type: "map",
                        map: "china",
                        geoIndex: 0,
                        aspectScale: 0.75, //长宽比
                        showLegendSymbol: false, // 存在legend时显示
                        label: {
                        normal: {
                            show: false,
                        },
                        emphasis: {
                            show: false,
                            textStyle: {
                            color: "#fff",
                            },
                        },
                        },
                        roam: true,
                        itemStyle: {
                        normal: {
                            areaColor: "#031525",
                            borderColor: "#FFFFFF",
                        },
                        emphasis: {
                            areaColor: "#2B91B7",
                        },
                        },
                        animation: false,
                        data: data,
                    },
                    {
                        name: "Top 5",
                        type: "scatter",
                        coordinateSystem: "geo",
                        symbol: "pin",
                        symbolSize: [50, 50],
                        label: {
                        normal: {
                            show: true,
                            textStyle: {
                            color: "#fff",
                            fontSize: 9,
                            },
                            formatter(value) {
                            return value.data.value[2];
                            },
                        },
                        },
                        itemStyle: {
                        normal: {
                            color: "#D8BC37", //标志颜色
                        },
                        },
                        data: convertData(data),
                        showEffectOn: "render",
                        rippleEffect: {
                        brushType: "stroke",
                        },
                        hoverAnimation: true,
                        zlevel: 1,
                    },
                ],

            }

            this.chart.setOption(option);

            window.addEventListener("resize", () => {
                this.chart.resize();
            });
        }
    }
}
</script>

<style scoped lang="less">
</style>